One by one, dip them into the espresso mixture to soak them. Place the soaked ladyfingers in the bottom of a large glass baking dish or casserole dish. Continue soaking ladyfingers and lining the bottom of the dish until it is completely covered.
Line up the ladyfingers in a neat, single layer. You can break some of the ladyfingers into pieces to finish lining the dish if necessary.
You can arrange the ladyfingers in an interesting pattern if you want the dish to have an interesting final effect.